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Revenue Recognition - Changes in Deferred Revenue Balances (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Gross deferred revenue, beginning balance |  | $ 65,832 | $ 67,850 | $ 107,200 | $ 113,719
Revenue earned from prior balances |  | (52,468) | (57,208) | (90,899) | (93,499)
Billings during period | [1] | 222,436 | 165,024 | 375,580 | 300,220
Revenue earned for new billings during the period |  | (132,052) | (108,688) | (286,940) | (253,724)
Other adjustments |  | 955 | 507 | (238) | 769
Gross deferred revenue, ending balance |  | 104,703 | 67,485 | 104,703 | 67,485
University Group [Member] | CTU [Member] |  |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Gross deferred revenue, beginning balance |  | 42,372 | 39,343 | 67,245 | 64,674
Revenue earned from prior balances |  | (32,859) | (33,358) | (58,404) | (55,433)
Billings during period | [1] | 148,118 | 88,990 | 248,130 | 175,611
Revenue earned for new billings during the period |  | (85,425) | (66,391) | (183,301) | (156,867)
Other adjustments |  | 496 | 273 | (968) | 872
Gross deferred revenue, ending balance |  | 72,702 | 28,857 | 72,702 | 28,857
University Group [Member] | AIUS [Member] |  |  |  |  |
Deferred Revenue Arrangement [Line Items] |  |  |  |  |
Gross deferred revenue, beginning balance |  | 23,460 | 28,507 | 39,955 | 49,045
Revenue earned from prior balances |  | (19,609) | (23,850) | (32,495) | (38,066)
Billings during period | [1] | 74,318 | 76,034 | 127,450 | 124,609
Revenue earned for new billings during the period |  | (46,627) | (42,297) | (103,639) | (96,857)
Other adjustments |  | 459 | 234 | 730 | (103)
Gross deferred revenue, ending balance |  | $ 32,001 | $ 38,628 | $ 32,001 | $ 38,628
[1] | Billings during period includes adjustments for prior billings.

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- Definition For the current period, the amount of new charges billed to customers for services to be provided for the current academic term. + References No definition available. + Details
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- Definition The amount of other adjustments to the deferred revenue balance during the current period. + References No definition available. + Details
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- Details
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